CN202263798U - Planishing device for cold-rolled strip steel - Google Patents
Planishing device for cold-rolled strip steel Download PDFInfo
- Publication number
- CN202263798U CN202263798U CN2011203121245U CN201120312124U CN202263798U CN 202263798 U CN202263798 U CN 202263798U CN 2011203121245 U CN2011203121245 U CN 2011203121245U CN 201120312124 U CN201120312124 U CN 201120312124U CN 202263798 U CN202263798 U CN 202263798U
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- uncoiling
- cold
- scalene cone
- strip steel
- planisher
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Abstract
The utility model relates to a planishing device for cold-rolled strip steel. Two uncoiling tension rollers are arranged in front of and behind a planisher respectively, an uncoiling steering roller is further arranged in front of the uncoiling tension roller in front of the planisher along the advancing direction of the strip steel, a middle section of a body of each of the uncoiling tension rollers and the uncoiling steering roller is of a cylindrical structure, two ends of the body of each of the uncoiling tension rollers and the uncoiling steering roller are of scalene cone structures in symmetry, and the inclination range of each scalene cone structure is from 1:100 to 1:30. Two ends of the body of each of the two uncoiling tension rollers in front of and behind the planisher respectively and the uncoiling steering roller arranged in front of the uncoiling tension rollers are of the scalene cone structures in symmetry by means of grinding, so that uneven distribution of tangential force and normal force in the directions of roller surfaces can be eliminated to a great extent, the tangential force and the normal force in the directions of roller surfaces are evenly distributed in conical degree areas of the grinded scalene cone structures, quality defects of transverse creases can be eliminated to a great extent, and elimination ratio is as high as about 92%.
Description
Technical field
The utility model relates to a kind of cold-strip steel flattening device.
Background technology
Existing cold-rolled steel sheet production process mainly is: raw material hot rolled coil → pickling → cold rolling-slitting-cleaning-annealing-finishing → finished product, finishing procedure are determining the quality of finished product coil of strip quality as last procedure.Cross break seal defective be cold-strip steel in the common a kind of mass defect of smooth straightening operation, generally during less than the band steel of 0.6mm, be prone to produce cross break seal defective at smooth thickness.This defective generally occurs in band steel both sides, and the middle part is less.The form of expression of cross break seal defective has 2 kinds: first kind is to be 90 ° travers approximately with rolling direction, and second kind is nail shape arc striped, and its spacing is between 20～100mm, and length is between 20～200mm.
Causing the main cause of cross break seal defective is technological reason; Be embodied in the following aspects: (1) plate shape is bad: during cold rolling of strip steel; If the control of plate shape is not good; It is tall and big in the limit of 10mm wave and middle wave to produce wave when rolling, causes band steel interlaminar bonding after the cover annealing easily, and belt steel surface can produce the cross break seal when smooth; (2) annealing temperature is improper: when the band steel is annealed in bell furnace, if temperature is too high.It is bonding to produce interlayer; If the band steel heats up when annealing, the cooling rate mistake, can cause the excessive velocities of expanding with heat and contract with cold of coil of strip; If the surface wear of convection current plate also can cause the coil of strip interlaminar bonding, the band steel of interlaminar bonding appears, be prone to produce the cross break seal when smooth; (3) smooth preceding steel roll temperature is higher: if steel roll temperature is greater than 45 ℃ before smooth, the band steel can produce a large amount of cross breaks seals.Main cause is that metallic molecule was more active when temperature was high. the band steel is easy to jump to the plastically deforming area from the elastic deformation area when receiving pulling force, produces skid wire at belt steel surface; Cause producing the cross break seal; But when temperature is higher than 35 ℃, air humidity when big, the heat radiation on secondary cooling table of the coil of strip after the annealing is slow, though cooling velocity is low. the belt steel surface temperature is lower than 45 ℃; But long-range 45 ℃ of coil of strip internal temperature, belt steel surface also can produce the cross break seal.It is the result of the reason comprehensive function aspect above three that the cross break seal appears after smooth in cold-rolled thin steel strip, adopts from the method for technology controlling and process and has high input weak effect.
In a single day the cross break seal appears in belt steel surface, not only influences strip surface quality, and the mechanical property of influence band steel, is prone to during punching press break.The coil of strip that the cross break seal occurs generally can be handled by degradation, and according to the difference of serious situation, production unit cost per ton reduces 50-100 unit not to be waited, and economic benefit is had a strong impact on.
The utility model content
The purpose of the utility model provides a kind of cold-strip steel flattening device, produces cross break seal defective occurrence rate problem of higher to solve existing apparatus.
For realizing above-mentioned purpose; The technical scheme of the cold-strip steel flattening device that the utility model provides is following: a kind of cold-strip steel flattening device; Comprise planisher; Be respectively equipped with a uncoiling tension roller before the machine of planisher with behind the machine, before the jockey pulley before machine on the band direction of advance, also be provided with uncoiling slewing rollers, said two uncoiling tension rollers and uncoiling slewing rollers body of roll interlude are cylindrical structure; Its two ends are the scalene cone structure of symmetry, and the gradient scope of said scalene cone structure is 1:100～1:30.
The junction of said scalene cone structure and cylindrical structure is the arc transition structure.
The length of said scalene cone is between 30～300mm.
The cold-strip steel flattening device of the utility model with the planisher machine before with machine after two uncoiling tension rollers and jockey pulley before the uncoiling slewing rollers body of roll two ends that are provided with all grind out the scalene cone structure of symmetry; Can be from eliminating roll surface direction tangential force and normal force situation pockety to a great extent; Making tangential force and the normal force of each roll surface direction be evenly distributed in grinding retreads in the zone of cone structure tapering; Can eliminate the mass defect of cross break seal to a great extent, elimination factor is up to about 92%.
Description of drawings
Fig. 1 is the structural representation of the utility model cold-strip steel flattening device embodiment;
Fig. 2 is the structure chart of the utility model roller;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the force diagram of roll surface.
The specific embodiment
The cross break seal defective that smooth unit shows does not come out later in annealing operation completely, is appearing at the unwinding machine after the planisher uncoiling between the frame, and the cross break seal can alleviate through symptom after the skin pass rolling to some extent, but can not eliminate fully.Therefore analyzing defect mainly occurs between this, mainly contains uncoiling slewing rollers, two control points of jockey pulley.
The structure of a kind of cold-strip steel flattening device embodiment is as shown in Figure 1, is respectively equipped with a uncoiling tension roller 2 and 3 before the machine of this device planisher 1 with behind the machine, before the jockey pulley before machine on the band direction of advance 3, also is provided with uncoiling slewing rollers 4.As shown in Figure 2, two uncoiling tension rollers and the uncoiling slewing rollers body of roll 5 interludes are cylindrical structure 52, and its two ends are provided with the scalene cone structure 52 of symmetry respectively, and the centre of roller is installed with axle 6, and two ends are provided with end plate 7.The gradient scope of scalene cone structure is 1:100～1:30, the gradient of the preferred 1:50 of present embodiment, and the length of gradient scalene cone is between 30～300mm.
As shown in Figure 3, scalene cone structure 51 is the arc transition structure with the oblique junction 53 of mill of cylindrical structure 52.
As shown in Figure 4,, the flattening process overall process can know that the main cause that the cross break seal appears in cold-strip steel in the finishing operation of rolling causes along roll surface direction tangential force and normal force skewness through being carried out force analysis.
Through lot of test, be employed in the method that the jockey pulley grinding behind the machine before uncoiling slewing rollers and the machine goes out certain chamfering (being the scalene cone structure) and can eliminate the mass defect that cross break is printed to a great extent, elimination factor is up to about 92%.
Claims (3)
1. cold-strip steel flattening device; Comprise planisher; Be respectively equipped with a uncoiling tension roller before the machine of planisher with behind the machine, before the jockey pulley before machine on the band direction of advance, also be provided with uncoiling slewing rollers, it is characterized in that: said two uncoiling tension rollers and uncoiling slewing rollers body of roll interlude are cylindrical structure; Its two ends are the scalene cone structure of symmetry, and the gradient scope of said scalene cone structure is 1:100～1:30.
2. cold-strip steel flattening device according to claim 1 is characterized in that: the junction of said scalene cone structure and cylindrical structure is the arc transition structure.
3. cold-strip steel flattening device according to claim 1 and 2 is characterized in that: the length of said scalene cone is between 30～300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203121245U CN202263798U (en) | 2011-08-25 | 2011-08-25 | Planishing device for cold-rolled strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203121245U CN202263798U (en) | 2011-08-25 | 2011-08-25 | Planishing device for cold-rolled strip steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202263798U true CN202263798U (en) | 2012-06-06 |
Family
ID=46154609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203121245U Expired - Fee Related CN202263798U (en) | 2011-08-25 | 2011-08-25 | Planishing device for cold-rolled strip steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202263798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430578A (en) * | 2011-08-25 | 2012-05-02 | 郑州市华驰薄板科技有限公司 | Cold-rolled strip steel flattening device and cold-rolled strip steel cross break eliminating method |
| CN105032932A (en) * | 2015-08-11 | 2015-11-11 | 北京首钢冷轧薄板有限公司 | Treatment method for edge wrinkle defect of cold-rolled strip steel |
-
2011
- 2011-08-25 CN CN2011203121245U patent/CN202263798U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430578A (en) * | 2011-08-25 | 2012-05-02 | 郑州市华驰薄板科技有限公司 | Cold-rolled strip steel flattening device and cold-rolled strip steel cross break eliminating method |
| CN105032932A (en) * | 2015-08-11 | 2015-11-11 | 北京首钢冷轧薄板有限公司 | Treatment method for edge wrinkle defect of cold-rolled strip steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140825 |
|
| EXPY | Termination of patent right or utility model |